Perhaps you should try some spelling variations:
"coder lower complete assignment problem" » "coder lower complexity assignment problem" (Expand search), "coder after complete assignment problem" (Expand search), "coder or complete assignment problem" (Expand search), "over lower complete assignment problem" (Expand search), "coder lower complete alignment problem" (Expand search)
"api python python python programming" » "api pythons python python programming" (Expand search), "api piton python python programming" (Expand search), "api pitons python python programming" (Expand search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("coder lower complete assignment problem") OR ("api python python python programming"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"coder lower complete assignment problem\") OR (\"api python python python programming\"))".
• Removing quotes may allow a broader search: (( coder lower complete assignment problem ) OR ( api python python python programming )).
• Adding a wildcard symbol may retrieve word variants: (("coder lower complete assignment problem") OR ("api python python python programming"))*.